TW201328390A - Methods and apparatuses for interference suppression for user equipment in heterogeneous network - Google Patents

Abstract

Embodiments of the present invention provide a method for interference suppression for a user equipment in a heterogeneous network, wherein the heterogeneous network comprises a Macro base station and a low power node, the user equipment is served by the low power node, and the low power node transmits data to the user equipment on a predefined resource block. The method may comprise the steps of: receiving a measurement report from the user equipment; determining a Tx muted resource element in the resource block based on the measurement report; and notifying the user equipment to perform rate matching, so that the user equipment receives data transmitted on the resource block according to a performing result of the rate matching.

Description

Method and apparatus for interference suppression of user equipment in a heterogeneous network

The present invention relates to the field of communications, and in particular, to a method and apparatus for performing interference suppression on user equipment in a heterogeneous network.

Heterogeneous network (HetNet) is a technology that increases system throughput and overall network efficiency. In a heterogeneous network, a low power node (LPN) is placed in the coverage area of the macro base station to form a heterogeneous system of different node types covered. The low power nodes are, for example, a Pico base station, a Femto/Home base station, a Micro base station, a Remote Radio Head (RRH), a relay, and the like. Common heterogeneous network scenarios such as indoor home base stations, outdoor hotspots, and indoor hotspots.

A very important part of a heterogeneous network is the interference problem between the nodes that are covered. In a heterogeneous network, the macro base station transmit power is usually much larger than the low power node, and the user equipment at the cell boundary of the low power node usually causes a signal because the signal is weak and/or interferes with other cellular signals. Poor quality.

In LTE Release 10 (also known as LTE-A, LTE-A for short), an inter-cell interference cancellation technique (eICIC) for heterogeneous networks has been discussed, and a quasi-blank sub-box in which power reduction and activity are reduced ( Almost blank subframe (ABS) is applied to macrocells to inhibit or attenuate macrophages to low-power nodes such as picocytes The effects of cells.

However, in order to maintain backward compatibility with the user equipment, the cell reference signal (CRS) of the macro cell continues to be transmitted regardless of whether the sub-frame is configured as the quasi-blank sub-box described above. Thus, the cellular reference signal of a macrocell may consistently interfere with the transmission of data by the picocell, such as data transmission on the Physical Downlink Shared Channel (PDSCH).

In the discussion of 3GPP RAN1, a scheme for interference suppression by Pico cell pause transmission data (Tx muting) combined with user equipment rate matching is proposed. However, in order to implement such a scheme, a Pico cell and its user equipment need to know a resource unit (RE) in a resource block (RB) for transmitting data that suspends transmission of data due to CRS interference of a macro cell. In addition, the Pico user equipment also needs to know when it is appropriate to begin rate matching corresponding to the suspension of transmission of data. All of these issues require further research and resolution.

Therefore, there is a need in the art for a solution that enables interference suppression by combining pause transmission data with user equipment rate matching.

In view of the above problems, the present invention provides a method and a device for performing interference suppression on a user equipment in a heterogeneous network. The method and device of the present invention have a simple implementation process and less use signaling, and can be implemented simply, efficiently, and conveniently. The pause transmission data matches the user equipment rate, thereby completing interference suppression for the user equipment of the low power node.

According to a first aspect of the present invention, there is provided a pair in a heterogeneous network A method for performing interference suppression by a user equipment, where the heterogeneous network includes a macro base station and a low power node, the user equipment is served by a low power node, and the low power node transmits data to the user equipment by using a predetermined resource block. The method may include the steps of: receiving a measurement report from the user equipment; determining, based on the measurement report, a resource unit of the suspended transmission data in the resource block; and notifying the user equipment to perform rate matching, so that the user equipment performs the result reception according to the rate matching The data transmitted by the resource block.

According to a second aspect of the present invention, there is provided a method for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network comprises a macro base station and a low power node, and the user equipment is served by a low power node The low power node transmits the data to the user equipment by using a predetermined resource block. The method can include the steps of: transmitting a measurement report to a low power node; performing rate matching for a resource block of a resource unit including a suspended transmission of data in response to a notification from a low power node regarding performing rate matching; and performing according to rate matching The result receives the data transmitted in the resource block.

According to a third aspect of the present invention, there is provided an apparatus for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network comprises a macro base station and a low power node, and the user equipment is served by a low power node The low power node transmits the data to the user equipment by using a predetermined resource block. The apparatus may include: a measurement report receiving device configured to receive a measurement report from the user equipment; a determining device configured to determine a resource unit of the suspended transmission data in the resource block based on the measurement report; and a notification device The configuration is configured to notify the user equipment to perform rate matching, so that the user equipment receives the data transmitted by the resource block according to the rate matching execution result.

According to a fourth aspect of the present invention, there is provided an apparatus for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network comprises a macro base station and a low power node, and the user equipment is served by a low power node The low power node transmits the data to the user equipment by using a predetermined resource block. The apparatus can include: a transmitting device configured to send a measurement report to a low power node; a rate matching executing device configured to respond to a notification from a low power node regarding performing rate matching for a resource including a suspended transmission of data a resource block of the unit to perform rate matching; and a data receiving apparatus configured to receive the data transmitted in the resource block according to the rate matching execution result.

Other features and advantages of the present invention will be apparent from the description of the preferred embodiments of the invention.

The embodiments of the present invention are explained and explained in more detail below with reference to the drawings. The drawings and the embodiments of the present invention are intended to be illustrative only and not to limit the scope of the invention.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and apparatus in accordance with various embodiments of the present invention. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a portion of code, the module, the program segment, or a portion of code comprising one or more Executable instructions for logical functions. It should also be noted that in some implementations as alternatives The functions noted in the blocks may also occur in an order different from that noted in the drawings. For example, two blocks shown in succession may in fact be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented in a dedicated hardware-based system that performs the specified functions or operations. Implementation, or can be achieved with a combination of dedicated hardware and computer instructions. The drawings and the embodiments of the present invention are intended to be illustrative only and not to limit the scope of the invention. The invention is explained and illustrated in more detail below in conjunction with the drawings.

In the present invention, a User Equipment (UE) may be various types of terminals, such as a mobile phone, a personal digital assistant (PDA), a portable computer, or any other suitable terminal having a mobile communication function. The base station may be, for example, a Node B, an eNodeB (eNB), an Access Point (AP), a Radio Access Station (RAS), and the like. The macro base station can be, for example, a Macro eNodeB/eNB, which can, for example, generate a Macro Cell. The low power nodes may be, for example, a pico base station (Pico eNodeB/eNB), a home base station (Femto eNodeB/eNB), a micro base station (Micro eNodeB/eNB), a remote radio head (RRH), and a repeater, etc. . These low power nodes can, for example, produce Pico cells, Femto cells, Micro Cells, and the like.

It should be noted that although the present invention mainly uses the Pico eNB as an example of a low power node, this is merely exemplary and can be completely The technical solution of the present invention is implemented using any other suitable low power node.

1 is a schematic diagram of a heterogeneous network suitable for use in accordance with an embodiment of the present invention.

The communication environment shown in Figure 1 schematically shows a heterogeneous network. The heterogeneous network illustratively includes a macro base station (e.g., Macro eNB) 110, a pico base station (e.g., Pico eNB), and a user equipment (UE) 130. The coverage of the macro base station 110 is schematically shown as "Macro cells", and the coverage of the pico base station is schematically shown as "Pico cells".

As shown in FIG. 1, the heterogeneous network includes a macro base station 110 and a pico base station 120. The pico base station 120 serves its user equipment 130, and the picocell 120 provides the user with a predetermined resource block. The device transmits data. The user equipment 130 may be switched from the macro cell to the micro cell, and may be interfered by the cell reference signal of the macro cell during communication with the pico cell 120.

For ease of description, the present invention is described based on an LTE/LTE-A system. Those skilled in the art will fully appreciate that the above described systems are merely illustrative and not limiting.

2 is a flow diagram of a method 200 of interference suppression for user equipment in a heterogeneous network, in accordance with one embodiment of the present invention. The heterogeneous network may be, for example, a communication environment as shown in FIG. The heterogeneous network may include a macro base station and a low power node, the user equipment is being served by a low power node, and the low power node is transmitted to the user equipment by using a predetermined resource block. data. The method 200 shown in FIG. 2 can be performed, for example, by a low power node, such as a pico base station.

At step S201, a measurement report from the user equipment is received.

According to an embodiment of the invention, the measurement report from the user equipment comprises at least identification information of neighboring cells that interfere with the user equipment.

In an embodiment in accordance with the present invention, the measurement report may include: a physical cell identity (PCID), a cell group identity (CGI), a reference signal received power (RSRP), a reference of a neighboring cell that interferes with the user equipment. Signal reception quality (RSRQ), and so on.

At step S202, based on the measurement report, the resource unit of the suspended transmission material in the resource block is determined.

According to an embodiment of the present invention, a resource unit that suspends transmission of data may be determined based on a measurement report in a plurality of manners.

In one embodiment, neighboring cells that interfere with the user equipment may be determined based on the measurement report; a cell reference signal of the neighboring cells is acquired; and the resource unit corresponding to the cell reference signal is determined as a resource unit that suspends transmission of the data.

In another embodiment, neighboring cells that interfere with the user equipment may be determined based on the measurement report; the interference intensity generated by the neighboring cells to the user equipment is compared to a predetermined threshold; and neighboring cells whose interference intensity is greater than a predetermined threshold are determined. To interfere with the cell; obtain a cell reference signal that interferes with the cell; and determine a resource unit corresponding to the cell reference signal as a resource unit that suspends transmission of the data.

In step S203, the user equipment is notified to perform rate matching, so as to use The user equipment receives the data transmitted by the resource block according to the rate matching execution result.

According to an embodiment of the present invention, rate matching signaling may be sent to a user equipment in a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), or an Enhanced Physical Downlink Control Channel (e-PDCCH), thereby notifying The user equipment performs rate matching. After the user equipment receives the rate matching signaling, it knows that the pico base station notifies itself that the rate matching is to be started, so as to receive the data transmitted by the resource block according to the rate matching execution result.

In one embodiment, rate matching signaling may be implemented using Radio Resource Control (RRC) signaling transmitted over the PDSCH. In another embodiment, a new signaling transmitted on the PDCCH or e-PDCCH may be defined as rate matching signaling. The e-PDCCH may occupy part of the resources of the PDSCH.

According to an embodiment of the present invention, the rate matching signaling may not only notify the user equipment to start performing rate matching, but may further include information about the receiving time, the information indicating that the user equipment receives the performance result according to the rate matching from the receiving time. The data transmitted in the resource block.

3 is a flow diagram of a method 300 of interference suppression for user equipment in a heterogeneous network, in accordance with another embodiment of the present invention. The heterogeneous network may be, for example, a communication environment as shown in FIG. The heterogeneous network may include a macro base station and a low power node, the user equipment is being served by a low power node, and the low power node transmits data to the user equipment by using a predetermined resource block. The method 300 shown in FIG. 3 can be, for example, a low power node (eg, Executed as Pico eNB).

At step S301, a measurement report from the user equipment is received.

This step is similar to step S201. The measurement report includes at least identification information of neighboring cells that interfere with the user equipment. In an embodiment in accordance with the invention, the measurement report may include neighboring cell PCID, CGI, RSRP, RSRQ, etc. that cause interference to the user equipment.

In addition, it is to be understood that the above-described examples are merely illustrative and not limiting, and that measurement reports may also include other suitable parameters that are common or available to those skilled in the art.

In step S302, based on the measurement report, neighbor cells that interfere with the user equipment are determined.

In the present embodiment, it is assumed that the measurement report received in step S301 includes the identification information of the macro cell shown in FIG. 1, which indicates that the macro cell has interfered with the user equipment. Then, in step S301, the included PCID and/or CGI and the like may be read from the measurement report to determine a specific cell that interferes with the user equipment.

At step S303, a cell reference signal of an adjacent cell is acquired.

After determining the adjacent cells that interfere with the user equipment, the cell reference signal of the adjacent cells, ie, the CRS, can be acquired. In an embodiment of the present invention, the process of acquiring the CRS may include obtaining a time-frequency location corresponding to the CRS and a sequence thereof. There are many ways to obtain CRS, and those skilled in the art can complete the acquisition of CRS by a known existing method, and are not limited to a specific manner.

In step S304, the resource unit corresponding to the cell reference signal is to be A resource unit that is determined to suspend the transfer of data.

According to an embodiment of the present invention, one resource block may include a plurality of resource units, and the resource unit may serve as a minimum unit in the resource block. After the CRS is acquired, it may be determined which resource unit or cells in the resource block correspond to the CRS. For example, one or more resource elements for transmitting CRS may be used as resource elements corresponding to the CRS. Then, the resource unit corresponding to the CRS can be used as a resource unit for suspending transmission of data. During the data transmission process of the pico base station to its user equipment, no data is transmitted in the resource unit of the resource block in which the data is suspended, but in the resource unit other than the resource unit in which the data is suspended. Transfer data.

In other embodiments in accordance with the present invention, the process of determining the resource unit for suspending transmission of data shown in steps S302-S304 may also be modified. For example, in one embodiment, after determining neighboring cells that interfere with the user equipment based on the measurement report, the intensity of the interference generated by the neighboring cells to the user equipment can be compared to a predetermined threshold. The interference strength may be obtained according to information (for example, RSRP and/or RSRQ) in the measurement report from the user equipment, and the predetermined threshold may be specified by a person skilled in the art according to experience or preset according to other criteria. Then, adjacent cells whose interference intensity is greater than a predetermined threshold may be determined as interfering cells, which is equivalent to refining neighboring cells that interfere with the user equipment, and only for those interfering cells that interfere with the user equipment to a certain extent. Performing a subsequent processing step of obtaining a cell reference signal of the interfering cells and determining a resource unit corresponding to the cell reference signal as a pause transmission The resource unit for the data.

In step S305, rate matching signaling is sent to the user equipment in the PDSCH.

In this embodiment, rate matching signaling can be implemented by using RRC signaling transmitted on the PDSCH. In one embodiment of the invention, RRC signaling can be defined as a BOOLEAN type signal. When the RRC signaling is “TRUE”, the user equipment may be instructed to perform rate matching on the next coming resource block; when the RRC signaling is “FALSE”, the user equipment may be instructed not to perform rate matching on the next coming resource block. .

In another embodiment in accordance with the invention, a new signaling transmitted on the PDCCH or e-PDCCH may be defined as rate matching signaling. Since the update of the control channel is faster, this method is particularly suitable for the case where the user equipment moves at a relatively fast speed. In contrast, RRC signaling can be applied to the case where the user equipment performs relatively slow speed movement.

In addition, it can be understood that, in addition to the RRC signaling on the PDSCH or the newly defined signaling on the PDCCH or the e-PDCCH, those skilled in the art can notify the user by using any other suitable signaling known in the art. The device starts rate matching.

In this embodiment, since the RRC signaling is used as the rate matching signaling, the user equipment may, for example, default to the first sub-frame after the sub-frame in which the rate matching signaling is received (referred to as the "next sub-box"). The data transmitted by the resource block is received according to the rate matching result.

In another embodiment in accordance with the invention, when employing PDCCH or When the ePDCCH sends rate matching signaling, the user equipment may, for example, perform rate matching on the sub-box (referred to as “current sub-frame”) in which the rate matching signaling is received, and receive the data transmitted by the resource block according to the rate matching result.

According to an embodiment of the present invention, the rate matching signaling may not only notify the user equipment to start performing rate matching, but may further include information about the receiving time, the information indicating that the user equipment receives the performance result according to the rate matching from the receiving time. The data transmitted in the resource block. In one embodiment, RRC signaling may be defined to include one or more bits indicating time information in addition to the Boolean value described above, for indicating information about the time of reception. For example, the RRC signaling may include a time information bit. When the value of the bit is "0", it indicates to the user equipment that the data of the resource block transmission is received in the current sub-box; when the value of the bit is "1" When indicating, the user equipment is instructed to receive the data of the resource block transmission in the next sub-box; and so on.

It should be understood that in the embodiment according to the present invention, the information on the reception time can be implemented in any suitable form, and is not limited to the above-described exemplary examples.

4 is a flow diagram of a method 400 of interference suppression for user equipment in a heterogeneous network, in accordance with one embodiment of the present invention. The heterogeneous network may be, for example, a communication environment as shown in FIG. The heterogeneous network may include a macro base station and a low power node, the user equipment is being served by a low power node, and the low power node transmits data to the user equipment by using a predetermined resource block. The method 400 shown in FIG. 4 can be, for example, by a low power node (eg, The user equipment served by the pico base station is executed.

At step S401, a measurement report is sent to the low power node.

According to an embodiment of the invention, the measurement report comprises at least: identification information of neighboring cells that interfere with the user equipment.

In an embodiment in accordance with the present invention, the measurement report may include: a physical cell identity (PCID), a cell group identity (CGI), a reference signal received power (RSRP), a reference of a neighboring cell that interferes with the user equipment. Signal reception quality (RSRQ), and so on.

In step S402, rate matching is performed for a resource block containing resource elements that suspend transmission of data in response to a notification from the low power node regarding performing rate matching.

According to an embodiment of the present invention, step S402 can be implemented in various ways. In an embodiment, the neighboring cells that interfere with the user equipment may be first determined, the cell reference signal of the neighboring cells is acquired, and then the resource unit corresponding to the cell reference signal is determined as the resource unit of the resource block in which the data is suspended. . In another embodiment, the neighboring cells that interfere with the user equipment may be first determined, the interference intensity generated by the neighboring cells to the user equipment is compared with a predetermined threshold, and the neighboring cells whose interference intensity is greater than a predetermined threshold are determined as interference. The cell acquires a cell reference signal interfering with the cell, and then determines a resource unit corresponding to the cell reference signal as a resource unit in the resource block to suspend transmission of the data.

According to an embodiment of the present invention, the notification regarding performing rate matching may be rate matching signaling received in a PDSCH, a PDCCH, or an e-PDCCH. In one embodiment, rate matching signaling can be implemented as RRC signaling transmitted on the PDSCH. In another embodiment, the rate matching signaling may be a newly defined signaling on the PDCCH or e-PDCCH.

According to an embodiment of the present invention, the rate matching signaling may further include information about a reception time indicating that the user equipment receives the data transmitted in the resource block according to the execution result of the rate matching from the reception time.

In step S403, the data transmitted in the resource block is received according to the rate matching execution result.

According to an embodiment of the present invention, according to the information about the reception time in the rate matching signaling, the data transmitted in the resource block is received according to the execution result of the rate matching from the reception time.

According to an embodiment of the present invention, the resource unit of the suspended transmission data in the resource block may be identified according to the rate matching execution result, and the data transmitted by the resource unit other than the resource unit in which the data is suspended in the resource block may be received.

5 is a flow diagram of a method 500 of interference suppression for user equipment in a heterogeneous network, in accordance with another embodiment of the present invention. The heterogeneous network may be, for example, a communication environment as shown in FIG. The heterogeneous network may include a macro base station and a low power node, the user equipment is being served by a low power node, and the low power node transmits data to the user equipment by using a predetermined resource block. The method 500 illustrated in FIG. 5 may be performed, for example, by a user equipment served by a low power node (eg, a Pico eNB).

At step S501, a measurement report is sent to the low power node.

This step is similar to step S401. The measurement report includes at least identification information of neighboring cells that interfere with the user equipment. In an embodiment in accordance with the invention, the measurement report may include neighboring cell PCID, CGI, RSRP, RSRQ, etc. that cause interference to the user equipment.

In an embodiment in accordance with the invention, the measurement report can be obtained and transmitted at the user equipment in accordance with a variety of technical means well known in the art.

At step S502, rate matching signaling in the PDSCH is received.

In this embodiment, rate matching signaling is implemented by using RRC signaling transmitted on the PDSCH. Therefore, RRC signaling in the PDSCH is received in step S502. In one embodiment of the invention, RRC signaling may be defined as a BOOLEAN type signal. When the received RRC signaling is “TRUE”, the user equipment may perform rate matching on the next coming resource block; when the RRC signaling is “FALSE”, the user equipment may not perform rate matching.

In another embodiment in accordance with the invention, rate matching signaling may be defined as new signaling transmitted on the PDCCH or e-PDCCH. Since the update of the control channel is faster, this method is particularly suitable for the case where the user equipment performs faster movement. In contrast, RRC signaling can be applied to the case where the user equipment performs relatively slow speed movement.

In step S503, neighboring cells that interfere with the user equipment are determined.

According to an embodiment of the invention, the user equipment can periodically measure the signal command and/or signal strength of neighboring cells so that it can be determined which neighboring cells are interfering with themselves. Those skilled in the art can utilize the well-known in the art. A variety of technical means to carry out this determination process.

At step S504, a cell reference signal of an adjacent cell is acquired.

After determining the adjacent cells that interfere with the user equipment, the cell reference signal of the adjacent cells, ie, the CRS, can be acquired. In an embodiment of the present invention, the process of acquiring the CRS may include obtaining a time-frequency location corresponding to the CRS and a sequence thereof. There are many ways to obtain CRS, and those skilled in the art can complete the acquisition of CRS by a known existing method, and are not limited to a specific manner.

In step S505, the resource unit corresponding to the cell reference signal is determined as a resource unit in the resource block that suspends transmission of data.

According to an embodiment of the present invention, after acquiring the CRS, it may be determined which one or which resource units in the resource block correspond to the CRS. For example, one or more resource elements for transmitting CRS may be used as resource elements corresponding to the CRS. Then, the resource unit corresponding to the CRS can be used as a resource unit for suspending transmission of data.

In other embodiments in accordance with the present invention, the process of determining the resource unit for suspending transmission of data shown in steps S503-S505 may also be modified. For example, in one embodiment, after determining neighboring cells that interfere with the user equipment, the intensity of the interference generated by the neighboring cells to the user equipment can be compared to a predetermined threshold. Wherein, the interference strength can be obtained, for example, by the user equipment by measuring the strength and/or quality of the CRS from the neighboring cells, and the predetermined threshold can be specified by a person skilled in the art according to experience or preset according to other criteria. Then, adjacent cells whose interference intensity is greater than a predetermined threshold can be determined as interfering cells, which is equivalent to Adjacent cells that interfere with the user equipment are refined, and only those interfering cells that interfere with the user equipment to a certain extent are subjected to subsequent processing steps, that is, obtaining cell reference signals of the interfering cells, and the cell reference signal is used. The corresponding resource unit is determined to be a resource unit that suspends transmission of data.

In step S506, the data transmitted by the resource unit other than the resource unit in which the data is suspended in the resource block is received.

In this embodiment, since RRC signaling is used as the rate matching signaling, the user equipment may, for example, receive the data transmitted by the resource block according to the rate matching result in the next sub-box.

In another embodiment according to the present invention, when the PDCCH or the ePDCCH is used to transmit the rate matching signaling, the user equipment may, for example, receive the data transmitted by the resource block according to the rate matching result in the current sub-box.

According to an embodiment of the present invention, the rate matching signaling may not only notify the user equipment to start performing rate matching, but may further include information about the receiving time, the information indicating that the user equipment receives the performance result according to the rate matching from the receiving time. The data transmitted in the resource block. The data transmitted in the resource block may be received according to the execution result of the rate matching from the reception time according to the information about the reception time in the rate matching signaling. For example, when the RRC signaling is used as the rate matching signaling, the user equipment may further include a time information bit. When the user equipment detects that the value of the bit is “0”, the same sub-carrier is received in the rate matching signaling. The frame receives the data transmitted by the resource block; when the value of the bit is detected as "1", the first sub-box receives after the sub-box in which the rate matching signaling is received The data transmitted by the resource block.

6 is a block diagram of an apparatus 600 for interference suppression of user equipment in a heterogeneous network, in accordance with one embodiment of the present invention. The heterogeneous network may be, for example, a communication environment as shown in FIG. The heterogeneous network may include a macro base station and a low power node, the user equipment is being served by a low power node, and the low power node transmits data to the user equipment by using a predetermined resource block. The device 600 shown in Figure 6 can be implemented in a low power node, such as a pico base station, in a heterogeneous network, or can be implemented in any other suitable device available to those skilled in the art. Apparatus 600 can perform method 200 shown in FIG. 2 and method 300 shown in FIG.

According to an embodiment of the invention, the apparatus 600 may comprise: a measurement report receiving means 610 configured to receive a measurement report from the user equipment; and a determining means 620 configured to determine a suspended transmission data in the resource block based on the measurement report And the notifying means 630 is configured to notify the user equipment to perform rate matching, so that the user equipment receives the data transmitted by the resource block according to the rate matching execution result.

According to an embodiment of the invention, the measurement report may at least comprise: identification information of neighboring cells that interfere with the user equipment.

According to an embodiment of the present invention, the determining means 620 may comprise: means for determining neighboring cells that interfere with the user equipment based on the measurement report; means for acquiring cellular reference signals of adjacent cells; and for The resource unit corresponding to the cell reference signal is determined as a device that suspends the resource unit of the transmitted data.

According to an embodiment of the present invention, the determining means 620 may include: Means for determining neighboring cells that interfere with the user equipment based on the measurement report; means for comparing the interference intensity generated by the neighboring cells to the user equipment with a predetermined threshold; for using adjacent cells having an interference intensity greater than a predetermined threshold Means for interfering with cells; means for acquiring a cell reference signal interfering with cells; and means for determining a resource unit corresponding to the cell reference signal as a resource unit for suspending transmission of data.

According to an embodiment of the present invention, the notifying means 630 may comprise: means for transmitting rate matching signaling to the user equipment in the physical downlink shared channel PDSCH, the physical downlink control channel PDCCH or the enhanced physical downlink control channel e-PDCCH .

According to an embodiment of the present invention, the rate matching signaling may include information about a reception time for indicating that the user equipment receives the data transmitted in the resource block according to the execution result of the rate matching from the reception time.

7 is a block diagram of an apparatus 700 for interference suppression of user equipment in a heterogeneous network, in accordance with another embodiment of the present invention. The heterogeneous network may be, for example, a communication environment as shown in FIG. The heterogeneous network may include a macro base station and a low power node, the user equipment is being served by a low power node, and the low power node transmits data to the user equipment by using a predetermined resource block. The device 700 shown in Figure 7 can be implemented in a user equipment served by a low power node, such as a pico base station, in a heterogeneous network, or can be implemented in any other suitable device available to those skilled in the art. Apparatus 700 can perform method 400 shown in FIG. 4 and method 500 shown in FIG.

According to an embodiment of the present invention, the device 700 may include: a transmitting device 710, configured to send a measurement report to the low power node; the rate matching executing device 720 is configured to respond to the notification from the low power node regarding performing rate matching, for the resource block of the resource unit including the suspended transmission data. Performing rate matching; and the data receiving device 730 is configured to receive the data transmitted in the resource block according to the rate matching execution result.

According to an embodiment of the invention, the measurement report may at least comprise: identification information of neighboring cells that interfere with the user equipment.

According to an embodiment of the present invention, the rate matching performing means 720 may comprise: means for determining neighboring cells that interfere with the user equipment; means for acquiring cellular reference signals of adjacent cells; and for reference to the cells The resource unit corresponding to the signal is determined as a device in the resource block that suspends the resource unit of the transmission data.

According to an embodiment of the present invention, the rate matching performing apparatus 720 may include: means for determining neighboring cells that cause interference to the user equipment; means for comparing the interference intensity generated by the neighboring cells to the user equipment with a predetermined threshold a device for determining an adjacent cell having an interference intensity greater than a predetermined threshold as a device for interfering cells; a device for acquiring a cell reference signal interfering with the cell; and for determining a resource unit corresponding to the cell reference signal as a resource block A device that suspends a resource unit that transfers data.

According to an embodiment of the present invention, the notification regarding performing rate matching may be rate matching signaling received in a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH, or an enhanced physical downlink control channel e-PDCCH.

According to an embodiment of the present invention, the rate matching signaling may include information about a reception time, wherein the data receiving apparatus 730 may include: means for receiving data transmitted in the resource block according to an execution result of the rate matching from the reception time .

According to an embodiment of the present invention, the data receiving apparatus 730 may include: means for identifying a resource unit of the suspended transmission material in the resource block according to the rate matching execution result; and for receiving the data transmission in the resource block by the suspension A device for transmitting data by a resource unit other than a resource unit.

According to an embodiment of the invention, wherein the low power node is a pico base station (e.g. Pico BS, Pico eNodeB/eNB).

The method and device for performing interference suppression on a user equipment in a heterogeneous network according to the present invention have a simple implementation process and less use signaling, and can easily, efficiently, and conveniently implement rate matching between the suspended transmission data and the user equipment, thereby completing the pair. Interference suppression of user equipment at low power nodes.

The method disclosed in the embodiments of the present invention can be implemented in a soft body, a hard body, or a combination of a soft body and a hard body. The hardware portion can be implemented using dedicated logic; the software portion can be stored in memory and executed by a suitable instruction execution system, such as a microprocessor, personal computer (PC), or mainframe. In a preferred embodiment, the invention is implemented as a software including, but not limited to, a firmware, a resident software, a microcode, and the like.

Moreover, embodiments of the invention may take the form of a computer program product accessible from a computer-usable or computer-readable medium that provides code for use by or in connection with a computer or any instruction execution system. . For the purposes of this description, a computer-usable or computer-readable mechanism can be any tangible device that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

The medium can be an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system (or apparatus or device) or a propagation medium. Examples of computer readable media include semiconductor or solid state memory, magnetic tape, removable computer magnetic disks, random access memory (RAM), read only memory (ROM), hard magnetic disks, and optical disks. Examples of current optical discs include compact disc-read only memory (CD-ROM), read/write optical disc (CD-R/W), and DVD.

A system suitable for storing and/or executing a code according to an embodiment of the present invention will include at least one processor that is indirectly coupled to a memory element either directly or through a system bus. The memory component can include local memory utilized during actual execution of the code, mass storage, and temporary storage that provides at least a portion of the code to reduce the number of times the code must be retrieved from the bulk memory during execution. Take memory memory.

Input/output or I/O devices (including but not limited to keyboards, displays, pointing devices, etc.) can be coupled to the system either directly or through intervening I/O controllers.

Network adapters can also be coupled to the system to enable the system to be coupled to other systems or remote printers or storage devices by means of an intermediate private or public network. Data machines, cable modems, and Ethernet cards are just a few examples of the types of network adapters currently available.

It should be noted that in order to make the embodiments of the present invention easier to understand, The above description omits some more specific technical details that are well known to those skilled in the art and that may be necessary for implementation of embodiments of the present invention.

The description of the present invention has been presented for purposes of illustration and description. Many modifications and variations are possible to those skilled in the art.

The embodiment was chosen and described in order to explain the embodiments of the invention and the embodiments of the invention It is within the scope of the invention as defined by the scope of the patent.

600‧‧‧ equipment

610‧‧‧Measurement report receiving device

620‧‧‧Determining device

630‧‧‧Notification device

700‧‧‧ Equipment

710‧‧‧Send device

720‧‧‧ rate matching actuator

730‧‧‧ data receiving device

Other objects and effects of the present invention will become more apparent from the following description of the embodiments of the invention. Schematic diagram of a network; FIG. 2 is a flowchart of a method for performing interference suppression on a user equipment in a heterogeneous network according to an embodiment of the present invention; FIG. 3 is a heterogeneous method according to another embodiment of the present invention. A flowchart of a method for performing interference suppression on a user equipment in a network; FIG. 4 is a flowchart of a method for performing interference suppression on a user equipment in a heterogeneous network according to an embodiment of the present invention; FIG. Another embodiment of the heterogeneous network A flowchart of a method for user equipment to perform interference suppression; FIG. 6 is a block diagram of an apparatus for performing interference suppression on a user equipment in a heterogeneous network according to an embodiment of the present invention; and FIG. 7 is another A block diagram of an apparatus for interference suppression of user equipment in a heterogeneous network of an embodiment.

In all of the above figures, the same element symbols have the same, similar or corresponding features or functions.

Claims (27)

A method for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network includes a macro base station and a low power node, the user equipment is served by the low power node, and the low power node is scheduled by The resource block transmits data to the user equipment, the method comprising: receiving a measurement report from the user equipment; determining, according to the measurement report, a resource unit of the suspended transmission data in the resource block; and notifying the user equipment to perform rate matching, The user equipment receives the data transmitted by the resource block according to the rate matching execution result. The method of claim 1, wherein the measurement report comprises at least: identification information of neighboring cells that interfere with the user equipment. The method of claim 1, wherein determining, according to the measurement report, the resource unit of the suspended transmission data in the resource block comprises: determining, based on the measurement report, a neighboring cell that interferes with the user equipment; acquiring the phase a cell reference signal of the adjacent cell; and a resource unit corresponding to the cell reference signal is determined as a resource unit for suspending transmission of the data. The method of claim 1, wherein the determining, by the measurement report, the resource unit of the suspended transmission data in the resource block comprises: Determining, according to the measurement report, a neighboring cell that interferes with the user equipment; comparing an interference intensity generated by the neighboring cell to the user equipment with a predetermined threshold; and determining, as an interference cell, an adjacent cell whose interference intensity is greater than a predetermined threshold Obtaining a cell reference signal of the interfering cell; and determining a resource unit corresponding to the cell reference signal as a resource unit for suspending transmission of the data. The method of claim 1, wherein the notifying the user equipment to perform rate matching comprises: transmitting, to the user equipment, a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH, or an enhanced physical downlink control channel e-PDCCH Rate matching signaling. The method of claim 5, wherein the rate matching signaling includes information about a receiving time, and is used to indicate that the user equipment receives the transmission result in the resource block according to the execution result of the rate matching from the receiving time. data. A method for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network includes a macro base station and a low power node, the user equipment is served by the low power node, and the low power node is scheduled by The resource block transmits data to the user equipment, the method comprising: transmitting a measurement report to the low power node; responding to the notification from the low power node regarding performing rate matching Rate matching is performed for the resource block including the resource unit that suspends transmission of the data; and the data transmitted in the resource block is received according to the rate matching execution result. The method of claim 7, wherein the measurement report comprises at least: identification information of neighboring cells that interfere with the user equipment. The method of claim 7, wherein performing rate matching on the resource block including the resource unit that suspends transmission of the data comprises: determining a neighboring cell that interferes with the user equipment; acquiring a cell reference signal of the neighboring cell And determining, by the resource unit corresponding to the cell reference signal, a resource unit in the resource block that suspends transmission of data. The method of claim 7, wherein performing rate matching on the resource block including the resource unit that suspends transmission of the data comprises: determining neighboring cells that interfere with the user equipment; and the neighboring cell to the user equipment The generated interference intensity is compared with a predetermined threshold; the adjacent cell whose interference intensity is greater than the predetermined threshold is determined as the interfering cell; the cell reference signal of the interfering cell is acquired; and the resource unit corresponding to the cell reference signal is determined as the resource A resource unit in a block that suspends the transfer of data. The method of claim 7, wherein the notification regarding performing rate matching is a rate matching signal received in a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH, or an enhanced physical downlink control channel e-PDCCH make. The method of claim 11, wherein the rate matching signaling includes information about a reception time, wherein receiving the data transmitted in the resource block according to the rate matching execution result comprises: matching the rate according to the receiving time The result of the execution to receive the data transmitted in the resource block. The method of claim 7, wherein receiving the data transmitted in the resource block according to the rate matching execution result comprises: identifying a resource unit of the suspended transmission data in the resource block according to the rate matching execution result; and receiving the borrowing The material transmitted by the resource unit outside the resource unit in which the data is temporarily suspended in the resource block. An apparatus for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network includes a macro base station and a low power node, the user equipment is served by the low power node, and the low power node is scheduled by The resource block transmits data to the user equipment, the device comprising: a measurement report receiving device configured to receive a measurement report from the user equipment; and determining means configured to determine, in the resource block based on the measurement report a resource unit that suspends the transfer of data; The notifying means is configured to notify the user equipment to perform rate matching, so that the user equipment receives the data transmitted by the resource block according to the rate matching execution result. The device of claim 14, wherein the measurement report comprises at least: identification information of adjacent cells that interfere with the user equipment. The device of claim 14, wherein the determining means comprises: means for determining adjacent cells that interfere with the user equipment based on the measurement report; means for acquiring a cell reference signal of the neighboring cells And means for determining a resource unit corresponding to the cell reference signal as a resource unit for suspending transmission of data. The device of claim 14, wherein the determining means comprises: means for determining, based on the measurement report, adjacent cells that interfere with the user equipment; for generating the neighboring cells for the user equipment Means for comparing an interference intensity with a predetermined threshold; means for determining an adjacent cell having an interference intensity greater than a predetermined threshold as a device for interfering cells; means for acquiring a cell reference signal of the interfering cell; and for referencing with the cell The resource unit corresponding to the signal is determined as a device that suspends the resource unit of the transmitted data. The device of claim 14, wherein the notifying means comprises: transmitting rate matching to the user equipment in a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH, or an enhanced physical downlink control channel e-PDCCH Signaling device. The device according to claim 18, wherein the rate matching signaling includes information about a receiving time, and is used to indicate that the user equipment receives the transmission result in the resource block according to the execution result of the rate matching from the receiving time. data. An apparatus for performing interference suppression on a user equipment in a heterogeneous network, wherein the heterogeneous network includes a macro base station and a low power node, the user equipment is served by the low power node, and the low power node is scheduled by The resource block transmits data to the user equipment, the device comprising: transmitting means configured to send a measurement report to the low power node; rate matching executing means configured to respond to an execution rate from the low power node a matching notification, performing rate matching on the resource block including the resource unit that suspends transmission of the data; and a data receiving apparatus configured to receive the data transmitted in the resource block according to the rate matching execution result. The device of claim 20, wherein the measurement report comprises at least: identification information of adjacent cells that interfere with the user equipment. According to the device of claim 20, wherein the rate The matching execution device includes: means for determining neighboring cells that interfere with the user equipment; means for acquiring a cell reference signal of the neighboring cell; and for determining a resource unit corresponding to the cell reference signal A device that suspends a resource unit that transfers data in the resource block. The device of claim 20, wherein the rate matching execution device comprises: means for determining neighboring cells that interfere with the user equipment; and for causing interference of the neighboring cells to the user equipment a device for comparing a predetermined threshold; a device for determining an adjacent cell having an interference intensity greater than a predetermined threshold as a device for interfering cells; a device for acquiring a cell reference signal of the interfering cell; and for corresponding to the cell reference signal The resource unit is determined as a device in the resource block in which the resource unit of the data transmission is suspended. The device according to claim 20, wherein the notification regarding performing rate matching is a rate matching signal received in a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH, or an enhanced physical downlink control channel e-PDCCH make. The device according to claim 24, wherein the rate matching signaling includes information about a reception time, wherein the data receiving device includes: an execution result according to the rate matching from the reception time to receive the resource block in the resource block A device for transferring data. The device of claim 20, wherein the data receiving device comprises: means for identifying a resource unit of the suspended transmission data in the resource block according to the rate matching execution result; and for receiving by the resource block A device for transmitting data transmitted by a resource unit other than a resource unit that suspends transmission of data. The device of claim 20, wherein the low power node is a pico base station.